Granted permission for the flightgear project to use some of the
sound effects from their site.
+Mark Akermann <flightgear@akermann.org>
+ Redone sun code. The sun now consists of three textures with individual
+ colors which are calculated based on the effect of light scattering.
+ This is accomplished by using various environmental data and by
+ calculating the distance the light travels through the atmosphere.
+
Raul Alonzo <amil@las.es>
Mr. Alonzo is the author of Ssystem and provided his kind permission